20031311342445 has 32 divisors (see below), whose sum is σ = 34516003906944. Its totient is φ = 9861421920000.

The previous prime is 20031311342411. The next prime is 20031311342467. The reversal of 20031311342445 is 54424311313002.

It is not a de Polignac number, because 20031311342445 - 2⁹ = 20031311341933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13008895 + ... + 14466995.

It is an arithmetic number, because the mean of its divisors is an integer number (1078625122092).

Almost surely, 2^{20031311342445} is an apocalyptic number.

It is an amenable number.

20031311342445 is a deficient number, since it is larger than the sum of its proper divisors (14484692564499).

20031311342445 is a wasteful number, since it uses less digits than its factorization.

20031311342445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528573.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 20031311342445 its reverse (54424311313002), we get a palindrome (74455622655447).

The spelling of 20031311342445 in words is "twenty trillion, thirty-one billion, three hundred eleven million, three hundred forty-two thousand, four hundred forty-five".